Frequently Asked Question

A: For correct process perform the following steps:
1.Charge the battery.
2.Reconnect the battery, and connect the USB cable, while holding the «Volume-UP» button. If the phone does not connect, check the battery status. If it is fully charged, connect (solder) the jumper, as shown at the “Show testpoint” picture.
3.Press the Unlock button.
A: After GT500/GT505 unlock you will have to flash it using any firmware from the support zone. After this procedure you phone will turn on.
A: In such cases your need to update your card manually (“Start”->”All programs”->”GsmServer”->”Octopus”->”Update doungle”).
A: Octopus Box is a professional device for LG cell phone service. This box can be used to unlock, flash and recover LG phones, resolve freeze problems and restore IMEI, NVM, camera and network.
A. For Flashing LG GM750 uses “Micro USB” cable.

To process flashing please perform the following steps:
1. Power phone OFF.
2. Please put phone into Emergency download mode. To do so, turn off the phone, press and hold Decrease Volume and Multitask key at the same time and then press the Power button.

3. Choose firmware and press “Write firmware” button.

For working in UART mode after flashing you need to Power phone ON and wait for ending of Initialization. After ending of Initialization you need to reboot phone.
A: Octopus warranty: 6 months. It starts when Octopus is updated for the first time. Please note, that cables are the accessories and are not covered by warranty.
A: You can get technical support by sending e-mail to or at theGSM Forum. Information about Octopus is available at the official web site.
A: Required drivers are available at the official web-site
A: Octopus Box Software uses its own type of files (.oct). You can download firmware files at Boot-Loader V2.0 or convert native LG flash files to the “.oct” type using the built-in converter.
A: Use “Repair country” option after reflashing phone.
A: To unlock LG U300, U310, U450, U830, U880, U890, U900, download the appropriate firmware from the folder “Firmware for unlock” at official support area, write the firmware to the handset, click “Unlock” and follow program instructions.
For Unlocking (Repairing security/Repairing NVM/Reading NVM/Writing NVM/Repairing IMEI/Repairing BlueTooth address) GM750 please connect phone with the "Micro UART" cable.

To process these operations please perform the following steps:
1. Power phone Off.
2. Connect phone with "Micro UART" cable

and press power button.
3. When Windows logo will be appeared, press "Read info" button. If phone info will be read correctly, perform your operation. If phone not detected (info not read) please repeat steps 1 - 3.
A: Charge the battery more then 50 %, simultaneously press «2»+«5»+«Pwr» buttons to start the phone in the emergency mode and reflash it again.
A: To unlock LG L704i, L705i, L705iX, L706ie, L852i, L01A, L03A, do the following steps:
  1. Power on the phone and disconnect the USB cable (in case it is connected).
  2. On the phone keypad, enter #17320508*# (for L03A code 3845#*03#)
  3. Go to «Port Settings» and select «QCT mode».
  4. Go to «Port Settings», choose «Diag Setting» and select «USB Set for Diag».
  5. Connect the cable to your phone, install drivers and enter «Unlock».
A: To remove the code, enter #17320508*# on the phone keypad to access service menu, then select «Factory reset».
A: To unlock LG KS20, do the following steps:
  1. Set required drivers for this phone model.
  2. Power on the phone.
  3. On the phone keypad, type "2676625720#" to enter Engineer Menu.
  4. Go to "Port Settings" and choose "Diag Setting".
  5. Select "USB Set for Diag" and choose "Ok".
  6. Select "Back" to return to "Port Settings".
  7. Choose "USB Switching" and select "LG Composite -DUN, DIAG". Choose "Done" and restart a phone.
  8. Connect the phone to the PC using a USB cable and try to read phone information using the "Read phone info" option.
    • If the operation fails, you should connect KE500 cable to the phone, type in "2676625720#" to enter “Engineer Menu” and do the following steps:
      • Go to "Port Settings" and choose "Diag Setting".
      • Select "USB Set for Diag" and choose "Ok".
      • Select "Back" to return to "Port Settings".
      • Restart a phone.
      Now you can unlock, read or write NVM using the UART (KE500) cable.
    • If the operation completes successfully, you can unlock the phone, read or write NVM and write firmware using the USB cable.
  9. To write firmware, please switch the phone to the "Emergency mode". To enter "Emergency Mode", turn on the phone and simultaneously press "SEND" +"Function" +"PWR".
  10. Restore NVM after reflashing the item.
  • BL40 – Press and hold "Vol+ and Vol-", then connect USB cable
  • KC910, KC910Q – Press and hold “SEND"+"Multitasking key"+"Lock/Unlock key"+"PWR"
  • KS20, MS20, MS25 – Press and hold "SEND"+"Function"+"PWR"
  • CU915, TU915, CU920 –  Press and hold "Vol+"+"Camera Key"+"PWR"
  • KE990, KE998, KE990d, KU990, KU990R, KU990M, KU990G, KU990i, KU990ig,U990 – Press and hold "SEND"+"C"+"Camera Key"+"PWR"
  • BL20, U8210, L600V , KU310, KU311, CU515, MU500, TU500, CU500, CU500V, CU400, CU405, TU515, MU515, CU720, TU720, KB620, HB620, HB620T, KF310, KF311, KF690, KF700, KF701, KF700Q, KU250, U250, KU380, KU385, U300, U300C, U310, U310C, U370, U370C, U370W, U450, U450C, U830, U880, U890, U900, U970, KU970 – Press and hold "2"+"5"+"PWR"